7.8
HIGH
CVE-2021-42008
Linux Kernel 6pack Hamradio Slab Out-of-Bounds Write Vulnerability
Description

The decode_data function in drivers/net/hamradio/6pack.c in the Linux kernel before 5.13.13 has a slab out-of-bounds write. Input from a process that has the CAP_NET_ADMIN capability can lead to root access.

INFO

Published Date :

Oct. 5, 2021, 12:15 a.m.

Last Modified :

May 12, 2023, 12:59 p.m.

Source :

[email protected]

Remotely Exploitable :

No

Impact Score :

5.9

Exploitability Score :

1.8
Public PoC/Exploit Available at Github

CVE-2021-42008 has a 17 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

Affected Products

The following products are affected by CVE-2021-42008 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Netapp solidfire_baseboard_management_controller_firmware
2 Netapp h410c_firmware
3 Netapp h300s_firmware
4 Netapp h500s_firmware
5 Netapp h700s_firmware
6 Netapp h410s_firmware
7 Netapp h300e_firmware
8 Netapp h500e_firmware
9 Netapp h700e_firmware
1 Linux linux_kernel
1 Debian debian_linux
: Total Affected Vendor : 3 | Products : 11
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2021-42008.

URL Resource
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13.13 Release Notes Vendor Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=19d1532a187669ce86d5a2696eb7275310070793 Patch Vendor Advisory
https://lists.debian.org/debian-lts-announce/2021/12/msg00012.html Mailing List Third Party Advisory
https://security.netapp.com/advisory/ntap-20211104-0002/ Third Party Advisory
https://www.youtube.com/watch?v=d5f9xLK8Vhw Exploit Third Party Advisory

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Profile Photo
a-roshbaik/Linux-Privilege-Escalation-Exploits

None

C Shell Python Assembly Ruby Makefile Meson

Updated: 1 month, 3 weeks ago
0 stars 0 fork 0 watcher
Born at : July 20, 2024, 8:34 p.m. This repo has been linked 91 different CVEs too.
Profile Photo
HaxorSecInfec/autoroot.sh

Auto Root / Privilege Escalation Exploit

autoroot privilege privilege-escalation root

Shell

Updated: 1 month ago
2 stars 1 fork 1 watcher
Born at : June 11, 2024, 9:57 p.m. This repo has been linked 85 different CVEs too.
Profile Photo
NaInSec/CVE-PoC-in-GitHub

All CVE - PoC in GitHub

poc proofofconcept tester allcve cvegithub cvenew cvepoc cveupdate

Updated: 3 weeks ago
5 stars 2 fork 2 watcher
Born at : March 22, 2024, 3:58 p.m. This repo has been linked 928 different CVEs too.
Profile Photo
zecool/cve

None

Updated: 6 months ago
1 stars 0 fork 0 watcher
Born at : March 11, 2024, 1:21 p.m. This repo has been linked 930 different CVEs too.
Profile Photo
JlSakuya/Linux-Privilege-Escalation-Exploits

Linux privilege escalation exploits collection.

C Shell Python Assembly Ruby Makefile Meson

Updated: 1 week, 4 days ago
88 stars 13 fork 13 watcher
Born at : April 26, 2023, 2:58 p.m. This repo has been linked 91 different CVEs too.
Profile Photo
ndk06/linux-kernel-exploitation

None

Updated: 3 weeks ago
6 stars 0 fork 0 watcher
Born at : Feb. 25, 2023, 10:40 a.m. This repo has been linked 178 different CVEs too.
Profile Photo
WhooAmii/POC_to_review

None

Updated: 6 months, 4 weeks ago
2 stars 2 fork 2 watcher
Born at : Nov. 25, 2022, 5:43 p.m. This repo has been linked 930 different CVEs too.
Profile Photo
soosmile/POC

None

Updated: 2 months, 2 weeks ago
8 stars 1 fork 1 watcher
Born at : June 21, 2022, 7:45 a.m. This repo has been linked 943 different CVEs too.
Profile Photo
hardenedvault/ved

Vault Exploit Defense

Makefile Shell C

Updated: 1 week, 2 days ago
121 stars 18 fork 18 watcher
Born at : June 16, 2022, 11:15 a.m. This repo has been linked 12 different CVEs too.
Profile Photo
0xdevil/CVE-2021-42008

CVE-2021-42008: Exploiting A 16-Year-Old Vulnerability In The Linux 6pack Driver

C Makefile Batchfile Shell

Updated: 1 month ago
29 stars 7 fork 7 watcher
Born at : Dec. 3, 2021, 2:08 p.m. This repo has been linked 1 different CVEs too.
Profile Photo
numanturle/CVE-2021-42008

Exploiting A 16-Year-Old Vulnerability In The Linux 6pack Driver

C

Updated: 1 month ago
2 stars 2 fork 2 watcher
Born at : Dec. 3, 2021, 1:18 p.m. This repo has been linked 1 different CVEs too.
Profile Photo
BachoSeven/stellestelline

None

Updated: 1 week, 2 days ago
11 stars 0 fork 0 watcher
Born at : Sept. 19, 2021, 10:43 a.m. This repo has been linked 4 different CVEs too.
Profile Photo
Al1ex/LinuxEelvation

Linux Eelvation(持续更新)

cve-2021-3156 cve-2019-7304 cve-2019-13272 cve-2018-18955 cve-2018-1000001 cve-2018-17182 cve-2017-1000367 cve-2017-1000112 cve-2017-16995 cve-2017-16939 linux-kernel elevation cve-2021-4034 cve-2022-0847

C Shell Python Ruby Makefile HTML

Updated: 2 weeks, 3 days ago
390 stars 92 fork 92 watcher
Born at : March 30, 2021, 7:09 a.m. This repo has been linked 72 different CVEs too.
Profile Photo
bsauce/kernel-exploit-factory

Linux kernel CVE exploit analysis report and relative debug environment. You don't need to compile Linux kernel and configure your environment anymore.

C Shell Makefile Meson

Updated: 1 week, 4 days ago
1152 stars 182 fork 182 watcher
Born at : Dec. 11, 2020, 1:28 p.m. This repo has been linked 38 different CVEs too.
Profile Photo
bcoles/kasld

Kernel Address Space Layout Derandomization (KASLD) - A collection of various techniques to infer the Linux kernel base virtual address as an unprivileged local user, for the purpose of bypassing Kernel Address Space Layout Randomization (KASLR).

kaslr linux linux-kernel linux-kaslr kernel-exploit kernel

C Shell Makefile

Updated: 3 weeks ago
410 stars 44 fork 44 watcher
Born at : Dec. 30, 2019, 5:12 a.m. This repo has been linked 25 different CVEs too.

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2021-42008 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2021-42008 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • Reanalysis by [email protected]

    May. 12, 2023

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions up to (excluding) 5.13.13 OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 2.6.12 up to (excluding) 4.4.282 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.5 up to (excluding) 4.9.281 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.10 up to (excluding) 4.14.245 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.15 up to (excluding) 4.19.205 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.20 up to (excluding) 5.4.143 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.5 up to (excluding) 5.10.61 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.11 up to (excluding) 5.13.13
  • Modified Analysis by [email protected]

    Mar. 29, 2022

    Action Type Old Value New Value
    Changed Reference Type https://lists.debian.org/debian-lts-announce/2021/12/msg00012.html No Types Assigned https://lists.debian.org/debian-lts-announce/2021/12/msg00012.html Mailing List, Third Party Advisory
    Added CPE Configuration OR *cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    Dec. 17, 2021

    Action Type Old Value New Value
    Added Reference https://lists.debian.org/debian-lts-announce/2021/12/msg00012.html [No Types Assigned]
  • Modified Analysis by [email protected]

    Nov. 26, 2021

    Action Type Old Value New Value
    Changed Reference Type https://security.netapp.com/advisory/ntap-20211104-0002/ No Types Assigned https://security.netapp.com/advisory/ntap-20211104-0002/ Third Party Advisory
    Added CPE Configuration AND OR *cpe:2.3:o:netapp:h300s_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:netapp:h300s:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:netapp:h500s_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:netapp:h500s:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:netapp:h700s_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:netapp:h700s:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:netapp:h300e_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:netapp:h300e:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:netapp:h500e_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:netapp:h500e:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:netapp:h700e_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:netapp:h700e:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:netapp:h410s_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:netapp:h410s:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:netapp:h410c_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:netapp:h410c:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:netapp:solidfire_baseboard_management_controller_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:netapp:solidfire_baseboard_management_controller:-:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    Nov. 17, 2021

    Action Type Old Value New Value
    Added Reference https://security.netapp.com/advisory/ntap-20211104-0002/ [No Types Assigned]
  • CVE Modified by [email protected]

    Nov. 10, 2021

    Action Type Old Value New Value
    Removed Reference https://security.netapp.com/advisory/ntap-20211104-0002/ [No Types Assigned]
  • CVE Modified by [email protected]

    Nov. 04, 2021

    Action Type Old Value New Value
    Added Reference https://security.netapp.com/advisory/ntap-20211104-0002/ [No Types Assigned]
  • Initial Analysis by [email protected]

    Oct. 12, 2021

    Action Type Old Value New Value
    Added CVSS V2 NIST (AV:L/AC:M/Au:N/C:C/I:C/A:C)
    Added CVSS V3.1 NIST AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
    Changed Reference Type https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13.13 No Types Assigned https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13.13 Release Notes, Vendor Advisory
    Changed Reference Type https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=19d1532a187669ce86d5a2696eb7275310070793 No Types Assigned https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=19d1532a187669ce86d5a2696eb7275310070793 Patch, Vendor Advisory
    Changed Reference Type https://www.youtube.com/watch?v=d5f9xLK8Vhw No Types Assigned https://www.youtube.com/watch?v=d5f9xLK8Vhw Exploit, Third Party Advisory
    Added CWE NIST CWE-787
    Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions up to (excluding) 5.13.13
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2021-42008 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2021-42008 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.10 }} 0.02%

score

0.39829

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
: